Vidal has been linked with a move away from the German Bundesliga champions for a long period of time and it looked like he would move last summer, with a return to Italy the most likely option.
However, the talks failed to turn into an actual move for the Chilean.
Inter have re-ignited their interest in Vidal, who is keen to make the move after becoming a fringe player at Bayern this season.
Inter are desperate to add strength to their squad in January to help them achieve UEFA Champions League football for next season.
They have made an impressive start to the season and sit second in the table, two points behind leaders Napoli.
The midfielder also recently had a row with Bayern manager Jupp Heynckes after the boss revealed that he has concerns over the Chilean’s weight.
This sparked an argument, with both parties angered and this is reported to have helped Vidal settle on the decision to leave the club.
Vidal has always flirted with a move back to Italy after his successful spell with Juventus.